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    Living above and belowground biomass and carbon stock assessment of station 1, Taklong Island, Taklong Island National Marine Reserve, Guimaras, Philippines
    Alegado, Alexis Jude T. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2018-06)
    The Taklong National Marine Reserve is one of the marine protected sites in the country with a good cover of mangroves. This study assessed the species composition, diversity, aboveground biomass and the estimated carbon of the natural mangrove forest found in Taklong Island Station 1. Barangay Lapaz. Nueva Valencia. Guimaras. The study aimed to: a.) map out the area of the selected mangrove patches, b.) identify the species composition and diversity of the sampling site, c.) quantify the aboveground and belowground biomass, carbon stock of live vegetations, and d.) to convert the carbon stock to carbon dioxide equivalence (CO₂e) of the selected station. This study is only limited to the estimation of living aboveground, belowground and the carbon stock using the published allometric equations. Only 7 species of mangroves were found in the site belonging to 3 families. The mean stand basal area was 21.47 m2 ha-1. The species diversity is low at 0.23 due to low speciation of species of mangroves on the site. The total aboveground biomass was 506.89 Mg ha-1 and carbon dioxide emission potential (CO₂e) of 2,498.15Mg CO₂e. This shows that mangrove in Station 1 of Taklong Island has stored a considerable amount of carbon overtime. Hence, there must be a proper management and protection of this ecosystem.
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    Anti-microbial activity of aqueous extracts from selected Philippine soft coral species
    Aguilar, Remotito A. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1994-03)
    Five species of soft corals were collected from Taklong Islands Guimaras and then extracted with water. The aqueous extract was assayed for anti- microbial activity. Potent extracts were tested for its minimal inhibitory concentration against the most sensitive microorganisms. The equivalent potency was also determined using PEN VK as the standard antibiotic. Lobophyton was found to inhibit S. aureus at 50% concentration of the aqueous extract (ATCC 25923) while Sinuloria. sp. was found to inhibit the growth of both S. aureus (ATCC 25923) and B. subtilis (NSRI-1). Aqueous extracts of Lobophyton sp.has an equipotency of 6.64 units/ml of PEN VK against S. aureus, whereas aqueous extracts of Sinulcria sp. has a potency of 104 units/ml of PEN VK against B. subtilis.